Brake-drum for vehicle-wheels.



N. CORNFIELD.

BRAKE DRUM FOR VEHICLE WHEELS.

APPLICATION FILED MAR- 9. I914.

Patented Apr. 13, 1915.

2 SHEETS-SHEET 1.

ATTORNEYS N. CORNFIELD.

BRAKE DRUM FOR VEHICLE WHEELS. APPLICATION FILED NHL 9. I914.

Patente m 915.

NOAH CORNFIELD,

OF NEW YORK, N. Y.

BRAKE-DRUM FOR VEHICLE-WHEELS.

Application filed March 9, 1914.

To (/77 tic/mm it m (/y concern:

lie it known that I NOAH CORNFIELI), a citizen of the United States, anda resident oi the cit of New York, borough of Brooklyn, in the county ofKings and State 01' New York have invented a new and l.m provedBrake-Drum -for l' ehicle-ll heels, of which the following is a full,clear, and ex act description.

Among the principal objects which the present invention has in view are:to provide a drum of the character mentioned, with a flexible connectionbetween said drum and the vehicle driving wheel; to provide a drum ofthe character mentioned vvith a suitable driving sprocket wheel; and toprovide a yielding connection for said wheel with said drum.

In the drawings, Figure 1 a horizontal section oi. the drum and a partof a driving wheel connected therewith; Fig. 2 is a face view of saiddrum, showing a driving sprocket, a connecting pin, and a slot forguiding said pin.

As seen in the accompanying drawings, the drum 7 is cup-shaped, havingan end og'iening away from the wheel to which said drum attached, and acentral passage i'ormcd by an upstanding annular flange 8. The passageformed by the flange 8 trued to fit snugly the edge 9 with which the hub10 of a brake bracket ll is provided. Frictionally engaging the sidewall of said pas sage is an internally coued seat ring Ason'iewhatgslightly less coned seat ring 13 is fitted upon a roundedportion l-lof the wheel axle. Between the rings 13 and 14. are slightlyconed rollers 15, the axes of said rollers being radiated from a commoncenter, or disposed in relatively conical arrangement. The axleintermediate the hub of the wheel and the ring 12 is a cupped washer 16.The washer 1G bears against the outer edge of the ring 12. the objectbeing to retain said ring in service position. Rigidly mounted upon thedrum 7 is a sprocket toothed ring 17. adapted for engagement by a powertransn'iission driving chain, usual in powcr-driven vehicles. The ring17 is reint'orced by a flange ring 18 rigidly mounted on the drum 7, asbest seen in Fig. 1 of the drawings. \Vhen adapting a drum of the Icharacter described to a driving wheel, an

extra heavy plate 19 is mounted upon the wheel. and a reinforcing member20 is mounted thereon and bored to receive the Specification of LettersPatent.

Patented Apr. 13, 1915.

Serial No. 823.537.

tapered end 21 of a pin 22. The pin is trued to operate as a bearing fora roller collar :23, over the edges of which the flange or head 24:formed on said pin, extends. To receive the pin :22 and its collar 23, aslot 25 is formed in the vertical wall of the drum 7, and in areinforcing wear strip 26, which is mounted upon said drum, within thecup thereof. The combined thicknesses of the wall of the drum and thewear strip 26 term a wearing edge of the slot for the collar to rollupon. The tapered end 21 of the pin 22, when inserted in the perforationprovided 1 or it in the plate 19 and reinforcing member 20, is headed orriveted. 'hen operating, the pull of the drum 7 and the drivingmechanism connected therewith, is imparted thereby to the driving wheelof the vehicle throu h said )in 22 and the collar mounted thereon.

As set forth in the application for patent filed by me under date ofMarch 9, 1914, for improvements in vehicle wheels, N 0. 828,508, thereis disclosed a construction and arrangement whereby the vibration of thewheel is independent of the axle on which it is mounted, andconsequently, in this connection, is independent of the vibration of thedrum 7. Also, mention is therein made of the fact that, with the loadingof a vehicle having a wheel constructed as therein described, the centerof the wheel and the center of the axle may not coincide, due to therelative depression of the center of the axle. As will be seen, such aconstruction requires a sliding connection between the rotary drivendrum 7 and the wheel driven thereby. This sliding connection is formedby the pin 29 mounted in the slot 2". With a connection such as hereindescribed, using the pin 2 fixedly mounted in the plate 19 of thevehicle wheel, and the slot 25 formed in the wall of the drum 7, thepoint of engagement between the two members may relatively shiftlengthwise in said slot, as the drum and wheel rotate together. Thebrake band 27 shown in the drawings and parts connected therewith are ofconventional form, and operate to force said band into gripping relationwith the under surface of said drum.

Claims.

1. In combiinitiong a. carrying wheel having a hub and flexibleconnect-ions tlun'ewith: an axle held. against rotation; a brake drumeontii'iuously c ntric with and rotatively mounted on said axle anoperative connection for said drum and said wheel, embodying a drivingpin rigidly mounted in one of said members, and a'slot to receive saidpin, formed in the other of said members, said slot being radial to saidmembers.

2. In combination; a carrying wheel having a hub and flexibleconnections therewith; an-axle held against rotation; a brake drumcontinuously concentric with and rotatively mounted on said axle anoperative connection for said drum and said wheel, embodying a drivingpin rigidly mounted in one of said members, and a slot to receive saidpin, formed in the other of said members, said slot being radial to saidmembers; and a head mounted on said pin to overlie the sides of saidslot, to retain said wheel and drum in service relation.

3. In combination; a carrying wheel having a hub and flexibleconnections therewith;

- an axle held against rotation; a brake drum continuously concentricwith and rotatively mounted on said axle an operative connection forsaid drum and said wheel, embodying a driving pin rigidly mounted in oneof mounted on said pin to overlie the sides of said slot, to retain saidwheel and drum in service relation; and a power transmission wheelmounted on said drum.

4. In combination; a traction wheel having a hub and resilientconnections therewitl an axle mounted in said hub; a facing for saidwheel; a reinforcement for said facing; a pin rigidly mounted in saidfacing and reinforcement to extend outward from said wheel; and a brakedrum rotatively mounted on said axle, said drum having a facing adaptedfor disposition in service parallel to the facing of said wheel, thefacing of said drum being radially slotted to receive said pin.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

NOAH CORNFIELD.

Witnesses:

E. F. Mmmoox, PHILIP D. ROLLHAUS.

